 for ($i = 0; $i < $ARGV[0]; $i++) {
 	print "$i ";
 	 for ($j = 0; $j < $ARGV[1] ; $j++) {
 	 	$v = rand();
 	 	$rounded = sprintf("%.3f", $v);
 	 	print "$rounded,";
 	 }
 	 print "\n";
 }